Seal-lock



ltop view of the same.

UNITED STATES PATENT OEEICE.

LUTHER C. BURGESS, OF CHICAGO, ILLINOIS.

SEAL-LOCK.

SPCFCATION forming part of Letters Patent No. 260,741, dated July 11, 1882.

VApplication filed December 1, 1881. (Model.)

To all whom "at may concern: I

Be it known that I, LUTHER C. BURGEss,

residing at Chicago, in the county ot' Cook and State of Illinois, and acitizen of the United States, have invented a. new and useful Improvement in Seal-Locks, of which the following is a full description,reference being had to the accompanying'drawings, in which Figure 1 represents the lock in use, the main bolt being in elevation and the body in section atline rvof Fig. 3. Fig. 2 is an elevation ofthe main bolt. Fig. 3 is a front view of the body of the lock with the seal in place. Fig. 4 is a Fig. 5 is a section at line y ot' Fig. 3.

The object of my invention is to construct a seal-lock which can be cheaply made and will be simple and ecient in use, which I accomplsh" by providing a lock-body having a chamber to receive the end of a main bolt, and pro- .vided also with a secondary bolt to hold the main bolt in place, and with a seal held in place by the main bolt, all as hereinafter fully described.

In the drawings, A represents the main bolt, having its lower end, u, formed as shown in Figs. 1, 2, and 3 of the drawings, this par-t a Vbeing square upon two sides and upon ypart of the third side, with one corner cut away, as shown in Fig. 5. Just above this part a are shoulders b upon two sides of the bolt A, and upon the other side is another shoulder, c. In

.one side of the part a is a hole, d, to receivea secondary bolt. This bolt has a large head, e. B represents the body ofthe lock. It has a recess or chamber, f, adapted to receive the lower end, a, of the bolt A. This chamber is open upon one side, g.

C is the seal, consisting ot' a thin plate of suitable metal or other material, which,when

in place, is inserted in grooves hin the body of the lock, and forms the fourth side of the chamber into which the lower end, a, of the bolt A passes. l

In the body B of the lock is a chamber, D, containing a secondary bolt, t', which projects through the inner wall of the chamber D and into the chamberj', as shown in Figs. 4 and 5.

7c is a spring in the chamber D, which holds the bolt i in the position shown in Fig. 5, except when it is forcibly pressed back. The

outer end of the chamberD is atiirst left open to permit the insertion ofthe boltzand spring k. For convenience I make the outer end of the part which contains the chamber D round.

E is a cap, which covers the open end of the chamber D, and after the bolt and spring have been inserted in such chamber this cap is riveted or otherwise securely fastened over the end of the chamber, as shown in Figs. 3, 4, and 5. This cap E is previded with an extension, to which a chain may be attached for the purpose of connecting the device with a car.

F, Fig. 1, represents a staple,which may be secured to a car, as usual, and Gis a hasp, which passes over such staple, and is to be connected at one end with the door of the car, as usual.

In use, the door of the car having been closed and the hasp G placed over the staple F, the bolt A is inserted in the staple F. Then a seal, C, is to 4be inserted in the grooves 71. in the body B of the lock, as shown in Fig. 3, and the end a of the bolt A is to be made to pass into the chamber or opening fin the body of the lock B, which operation will force the secondary bolt i back until the hole d in the end a of the bolt Acomes in line with the secondary bolt i, which then will be forced by the springkinto the hole d, as shown in Fig. 5. In this position the shouldei1 c upon the bolt A will be over and in contact'with the upper edge ofthe seal C, as shown in Fig. 1, and it will be impossible to withdraw the boltAorremove the. seal C without breaking some part, and the seal C, being made of thin met-al or other suitable material, can be broken without difficulty by turning the outer end of the part B outward, and then'the end a oi' the boltA can be removed from the chamber F by turning the same, the rounded corner permitting such turning.

The seal C may be made of cast-iron or any' other material which can be broken without the exertion of great force.

ing the form of the body B slightly and providing it with suitable eyes to receive rivets ICO the device might be secured to and successfully used upon mail-bags.

The lower end of the part a of the bolt A is rounded, so that as it passes down in the 5 chamberfit can pass over the end of the bolt z' and force it back.

Any suitable recess may be provided in the part a to receive the bolt i.

What I claim as new, and desire to secure 1o by Letters Patent, is as follows:

1. In a seal-lock, the combination, with the body B, provided with the ehamberj', and the vertical grooves h h for receiving the seal C, and the springbolt i, extending into the said I5 chamber, of the main holt A, having a projectas specified.

LUTHER C. BURGESS. Titnessesz E. A. WEST, ALBERT H. ADAMS. 

